and warm! and tonight it is a very different story! paul? >> big deal , big change. we had record highs as recently as tuesday. and tonight, we have a frost advisory! those of you watching us in marin county and sonoma, and napa, are this is for you. and that's a change from 6:00 tonight. you're under a frost advisory with overnight lows pretty close to freezing. bring the pets inside! and cover any tender vegetation. temperatures outside, pretty chilly. san raphael, 47, santa rosa 48. napa, fairfield, concord, livermore. this is mount diablo, a dusting of snowfall in inland areas this morning. details coming up.